638539748

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 1489004160

約数和(自身を除く): 850464412

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 29, 44, 58, 67, 77, 97, 116, 121, 134, 154, 194, 203, 242, 268, 308, 319, 388, 406, 469, 484, 638, 679, 737, 812, 847, 938, 1067, 1276, 1358, 1474, 1694, 1876, 1943, 2134, 2233, 2716, 2813, 2948, 3388, 3509, 3886, 4268, 4466, 5159, 5626, 6499, 7018, 7469, 7772, 8107, 8932, 10318, 11252, 11737, 12998, 13601, 14036, 14938, 16214, 19691, 20636, 21373, 23474, 24563, 25996, 27202, 29876, 30943, 32428, 39382, 42746, 45493, 46948, 49126, 54404, 56749, 61886, 71489, 78764, 82159, 85492, 90986, 98252, 113498, 123772, 142978, 149611, 164318, 181972, 188471, 216601, 226996, 235103, 285956, 299222, 328636, 340373, 376942, 433202, 470206, 500423, 598444, 680746, 753884, 786379, 866404, 940412, 1000846, 1319297, 1361492, 1572758, 1645721, 2001692, 2073181, 2382611, 2638594, 3145516, 3291442, 4146362, 4765222, 5277188, 5504653, 6582884, 8292724, 9530444, 11009306, 14512267, 22018612, 22804991, 29024534, 45609982, 58049068, 91219964, 159634937, 319269874, 638539748]

約数ペア:

[(1, 638539748), (2, 319269874), (4, 159634937), (7, 91219964), (11, 58049068), (14, 45609982), (22, 29024534), (28, 22804991), (29, 22018612), (44, 14512267), (58, 11009306), (67, 9530444), (77, 8292724), (97, 6582884), (116, 5504653), (121, 5277188), (134, 4765222), (154, 4146362), (194, 3291442), (203, 3145516), (242, 2638594), (268, 2382611), (308, 2073181), (319, 2001692), (388, 1645721), (406, 1572758), (469, 1361492), (484, 1319297), (638, 1000846), (679, 940412), (737, 866404), (812, 786379), (847, 753884), (938, 680746), (1067, 598444), (1276, 500423), (1358, 470206), (1474, 433202), (1694, 376942), (1876, 340373), (1943, 328636), (2134, 299222), (2233, 285956), (2716, 235103), (2813, 226996), (2948, 216601), (3388, 188471), (3509, 181972), (3886, 164318), (4268, 149611), (4466, 142978), (5159, 123772), (5626, 113498), (6499, 98252), (7018, 90986), (7469, 85492), (7772, 82159), (8107, 78764), (8932, 71489), (10318, 61886), (11252, 56749), (11737, 54404), (12998, 49126), (13601, 46948), (14036, 45493), (14938, 42746), (16214, 39382), (19691, 32428), (20636, 30943), (21373, 29876), (23474, 27202), (24563, 25996)]